DARPA primed the pump for the internet. The history of the internet NASA should prime the pump for space access and that should be its primary and maybe even sole purpose. Space access is a more capitally intensive task, so it justifies more focus.

What are some of the key design elements for the internet that should be followed for a good space infrastructure system.

1. The internet is about moving information but space access is about moving energy and matter. The internet drove down all sorts of costs associated with moving information. A revolution in space access needs to be architected to drive down the costs of getting more energy and matter.

2. Highly utilized tiered system that can be built modularly and incrementally

The internet has the backbone network and primary nodes and routers. It also has tiers of providers.

Space access technology should look more preferentially on systems that are modularly expandable and scalable.

3. Most of the pieces of the internet infrastructure are automated with minimal configuration. The early internet also had a lot of manual work/configuration and knowledge barriers. Custom coding and configuration were costs and barriers. The space infrastructure should be cheap and automated.

4. As much as possible use commodity components and hardware that is used for other purposes. Computers were not just used for the internet. There was money and market forces already at play pushing the improvement of computers. This is an advantage to using laser modules. Lasers are being developed for military and industrial purposes. Lasers have a rapid improvement rate.

On the ground laser module:

Power module in space:

5. The build out of space infrastructure does not need to involve people in space. I am a huge proponent of space colonization and of a manned space program. However, those pieces should come after the space launch and energy generation systems are built (or from a separate pool of funding). Designs for space structures can be made to be completely automated and modular.

If something (commodized cheap module of the overall system) does not work then it should be thrown away. There should be redundancy. Every part is cheap and replaceable.

The goal should be to drive $10,000/kg launches down to near the cost of the electricity needed to lift a kilogram into space ($5-10/kg). Then the modular space energy infrastructure should then drive down the cost of electrical energy as well.

Supplying power for space and back to earth is an infrastructure that could be built up without the complexity and cost of involving people. the low to no gravity of space means that we do not have to build structures -we just have to have the pieces stay positioned relative to each other. The systems that are put into space should avoid complicated construction. Systems using magnetic or photonic positioning and formation flying could avoid the need for costly astronaut construction. Space telescopes are also infrastructure that is amenable to floating/inflating in place non-construction construction.

Once the launch costs come down then the other activities will be justified. Space mining, colonization etc...